The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1984
Filed:
Oct. 15, 1979
John Mooi, Homewood, IL (US);
Marvin F Johnson, Homewood, IL (US);
Atlantic Richfield Company, Philadelphia, PA (US);
Abstract
A process for reforming naphthene and paraffin-containing hydrocarbon feeds to increase their aromatic content is disclosed which involves the use of a series of reaction zones containing a supported platinum-group metal catalyst and a supported rhenium catalyst, wherein the distribution of catalytically effective platinum-group metal and rhenium among the series of reaction zones is skewed. The ratio of the percent by weight of the supported platinum-group metal in the catalyst in at least one of the earlier reaction zones of the series of reaction zones to that in the catalyst in at least one of the later reaction zones is in the range of about 1.5 to 10, and preferably in the range of about 2 to about 6. The percent by weight of supported rhenium based on the catalyst in the first zone is preferably less than about 10 percent by weight. Broadly, in the skewed distribution of supported platinum-group metal and rhenium, the ratio of the platinum-group metal to rhenium in the earlier zones is greater than about 1.5, and the ratio of platinum-group metal to rhenium in the later zones is less than about 1.